How much can mid-year reports hurt?

My counselor uploaded my mid-year grades on common app so I had to submit it.
I have all A’s for my first semester of senior year except for a 80 in AP Cal.
This was for U Michigan Ross School of Business which does not require mid-year reports as far as I know…
How much would this hurt me?

I think that the mid year grades are more a check that students don’t coast through senior year. I can’t see how the AP Calc grade would hurt anything.